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authorChuck Lever <chuck.lever@oracle.com>2014-05-28 18:34:49 +0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2014-06-04 16:56:51 +0400
commit4f4cf5ad6fc1b16dc8dc9d750bb80b35eba5e98d (patch)
tree752787b1b79b4d7c076883434bcc5650e168d1cb /include/linux
parent18906972aa1103c07869c9b43860a52e0e27e8e5 (diff)
downloadlinux-4f4cf5ad6fc1b16dc8dc9d750bb80b35eba5e98d.tar.xz
SUNRPC: Move congestion window constants to header file
I would like to use one of the RPC client's congestion algorithm constants in transport-specific code. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/sunrpc/xprt.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 3e5efb2b236e..5903d2c0ab4d 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -24,6 +24,12 @@
#define RPC_MAX_SLOT_TABLE_LIMIT (65536U)
#define RPC_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE_LIMIT
+#define RPC_CWNDSHIFT (8U)
+#define RPC_CWNDSCALE (1U << RPC_CWNDSHIFT)
+#define RPC_INITCWND RPC_CWNDSCALE
+#define RPC_MAXCWND(xprt) ((xprt)->max_reqs << RPC_CWNDSHIFT)
+#define RPCXPRT_CONGESTED(xprt) ((xprt)->cong >= (xprt)->cwnd)
+
/*
* This describes a timeout strategy
*/